The bandwidth theorem in sparse graphs
The bandwidth theorem [Mathematische Annalen, 343(1):175–205, 2009] states that any n-vertex graph G with minimum degree [Formula Presented] contains all n-vertex k-colourable graphs H with bounded maximum degree and bandwidth o(n). We provide sparse analogues of this statement in random graphs as well as pseudorandom graphs. More precisely, we show that for p ≫[Formula Presented] asymptotically almost surely each spanning subgraph G of G(n, p) with minimum degree [Formula Presented] pn contains all n-vertex k-colourable graphs H with maximum degree ∆, bandwidth o(n), and at least Cp−2 vertices not contained in any triangle. A similar result is shown for sufficiently bijumbled graphs, which, to the best of our knowledge, is the first resilience result in pseudorandom graphs for a rich class of spanning subgraphs. Finally, we provide improved results for H with small degeneracy, which in particular imply a resilience result in G(n, p) with respect to the containment of spanning bounded degree trees for p ≫[Formula Presented].
| Item Type | Article |
|---|---|
| Keywords | external graph theory,random graphs,pseudorandom graphs |
| Departments | Mathematics |
| DOI | 10.19086/aic.12849 |
| Date Deposited | 24 Sep 2020 12:51 |
| URI | https://researchonline.lse.ac.uk/id/eprint/106618 |
Explore Further
- http://www.scopus.com/inward/record.url?scp=85090527679&partnerID=8YFLogxK (Scopus publication)
- https://www.lse.ac.uk/Mathematics/people/Peter-Allen (Author)
- https://www.advancesincombinatorics.com/ (Official URL)
